Delayed coker drumhead handling apparatus

Abstract

A delayed coker drumhead handling apparatus, which includes remotely operable trammel pivot apparatus to open and close the coke drum by moving the drumhead downwardly and laterally, such that the apparatus is especially suitable for use in areas of restricted clearance to the operating deck or otherwise confined space.

We claim: 
     
       1. In a petroleum coke-producing vessel, including a generally cylindrical drum body, a drum outlet, and a removable drumhead at the drum outlet, the improvement comprising a trammel pivot drumhead handling apparatus comprising a plurality of pivoting hydraulic cylinders connected to said drumhead and pivotally connected to said drum body at an upper pivot, and an offset hydraulic cylinder connected to said drumhead, said pivoting cylinders positioned to lower said drumhead from a closed to an open position, and said offset cylinder positioned to move said drumhead laterally between open and closed positions. 
     
     
       2. The vessel of claim 1 to which is attached a removable support structure to support the upper pivot of each hydraulic cylinder. 
     
     
       3. The vessel of claim 2 in which said trammel pivot drumhead handling apparatus comprises four hydraulic cylinders to position and support said drumhead, said four cylinders being positioned in pairs on opposite sides of said drum body. 
     
     
       4. The vessel of claim 2 further including a drum outlet flange at the drum outlet, said support structure being attached to said drum body at the drum outlet flange.